[robair]

Gday All

I am finding the weather very interesting right now.
Here is an updated forecast.

1017 UTC 19/11/09 AIRSERVICES AUSTRALIA
GENERAL MET MESSAGE BRIEFING



Prepared for: ROBFLIGHT

YSSY
SYDNEY AIRPORT WEATHER BRIEFING
ISSUED AT 0529Z ON THE 19/11/2009 [1629 ON THE 19/11/2009 LOCAL]

SYDNEY TAF: (THIS TAF MAY NOT BE THE LATEST ISSUE)
TAF YSSY 190422Z 1906/2012
03020G30KT CAVOK
FM191200 01008KT 9999 FEW020
FM192200 03015KT CAVOK
FM200400 03020G30KT CAVOK
PROB30 TEMPO 1906/1912 5000 TSRA SCT010 SCT070CB
PROB30 TEMPO 2006/2012 5000 TSRA SCT010 SCT070CB
RMK
T 28 25 25 23 Q 1009 1010 1010 1009


TAF SUMMARY:
A HIGH PRESSURE SYSTEM OVER THE TASMAN SEA IS DIRECTING A
NORTHEASTERLY FLOW OVER SYDNEY. THE NORTHEASTERLY WINDS WILL EASE
OVERNIGHT BEFORE REDEVELOPING AGAIN TOMORROW, BECOMING FRESH AND
GUSTY IN THE AFTERNOON. THUNDERSTORMS HAVE DEVELOPED ALONG THE RANGES
AND ARE LIKELY TO MOVE INTO SYDNEY LATER TODAY, A SIMILAR PATTERN CAN
BE EXPECTED TOMORROW AFTERNOON.

THUNDERSTORM POTENTIAL:
CHANCE WITHIN 20NM OF SYDNEY AIRPORT AFTER 06-12Z TODAY AND AGAIN
AFTER 06Z TOMORROW.

OTHER POSSIBILITIES:
20% CHANCE OF SOME SCT015 THIS AFTERNOON [SEABREEZE STRATUS].
20% CHANCE WIND TENDS SE'LY AT FIRST IN BAY BREEZE.

SYDNEY OUTLOOK:
SATURDAY : CHANCE AFTERNOON SHOWER/THUNDERSTORM. CITY MAX: 33
SUNDAY : CHANCE AFTERNOON SHOWER/THUNDERSTORM. CITY MAX: 30

CODE GREY:
NIL.

REGARDS
CHRIS UNTIL 7PM, THEN RICHARD.

NOTES:
1. THIS BRIEFING IS NOT AMENDED BETWEEN ROUTINE ISSUES. FOR
OPERATIONAL PLANNING, REFERENCE SHOULD BE MADE TO THE LATEST TAF OR
TTF.

2. CODE GREY PROVIDES EARLY ADVICE OF A POSSIBLE LATER TAF AMENDMENT.
IT IS USED IF THERE IS A SMALL BUT REALISTIC CHANCE OF A THUNDERSTORM
OR CONDITIONS BELOW SPECIAL ALTERNATE MINIMA BETWEEN 14 AND 24Z.
SPECIAL ALTERNATE CONDITIONS ARE BKN OR OVC CLOUD BELOW 700FT OR
VISIBILITY LESS THAN 2500M.